Question

Which of the following groupings contains only representative elements? Al, Mg, Li; Ni, Fe, Zn; Cu, Co, Cd; Hg, Cr, Ag

A) Al, Mg, Li
B) Ni, Fe, Zn
C) Cu, Co, Cd
D) Hg, Cr, Ag

Answer 1

The groupings that contain only representative elements are Al, Mg, Li. Representative elements are found in groups 1, 2, and 12-18 of the periodic table, and they include metals, metalloids, and nonmetals. Al, Mg, and Li are all metals and belong to groups 1 and 2.

Step-by-step explanation:

The groupings that contain only representative elements are:

1. Al, Mg, Li
2. Ni, Fe, Zn
3. Cu, Co, Cd
4. Hg, Cr, Ag

Out of these groupings, only Al, Mg, Li contains representative elements. Representative elements are found in groups 1, 2, and 12-18 of the periodic table, and they include metals, metalloids, and nonmetals. Al, Mg, and Li are all metals and belong to groups 1 and 2, which are known as alkali metals and alkaline earth metals, respectively.